The contact owns a 2019 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, there was an abnormal knocking sound coming from the engine compartment. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed failures with the camshaft and cylinder #7 connecting rod, resulting in damages to the engine. The contact was informed that the engine needed to be replaced. The vehicle was repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling), but the VIN was not included. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 100,000. The VIN was not available.